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All results from a given calculation for P(CH3)3 (trimethylphosphine)

using model chemistry: MP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-454.598739
Energy at 298.15K-454.608543
HF Energy-454.399851
Nuclear repulsion energy176.283131
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3531 3079 9.91      
2 A1 3353 2924 1.68      
3 A1 1747 1523 2.11      
4 A1 1601 1395 0.40      
5 A1 1130 985 25.41      
6 A1 787 686 0.14      
7 A1 349 304 1.93      
8 A2 3541 3087 0.00      
9 A2 1743 1520 0.00      
10 A2 967 843 0.00      
11 A2 179 156 0.00      
12 E 3542 3088 2.87      
12 E 3542 3088 2.87      
13 E 3532 3079 0.98      
13 E 3532 3079 0.98      
14 E 3356 2926 2.39      
14 E 3356 2926 2.39      
15 E 1746 1522 1.50      
15 E 1746 1522 1.50      
16 E 1742 1519 2.22      
16 E 1742 1519 2.22      
17 E 1578 1376 4.29      
17 E 1578 1376 4.29      
18 E 1106 964 19.45      
18 E 1106 964 19.45      
19 E 1006 877 0.51      
19 E 1006 877 0.51      
20 E 849 740 6.60      
20 E 849 740 6.60      
21 E 294 256 0.56      
21 E 294 256 0.56      
22 E 195 170 0.02      
22 E 195 170 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 28408.3 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 24769.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/STO-3G
ABC
0.19027 0.19027 0.12493

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.637
C2 0.000 1.616 -0.292
C3 1.399 -0.808 -0.292
C4 -1.399 -0.808 -0.292
H5 0.000 1.482 -1.387
H6 -0.889 2.210 -0.025
H7 0.889 2.210 -0.025
H8 1.283 -0.741 -1.387
H9 2.359 -0.336 -0.025
H10 1.470 -1.875 -0.025
H11 -1.283 -0.741 -1.387
H12 -1.470 -1.875 -0.025
H13 -2.359 -0.336 -0.025

Atom - Atom Distances (Å)
  P1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
P11.86351.86351.86352.50802.47252.47252.50802.47252.47252.50802.47252.4725
C21.86352.79852.79851.10321.10211.10212.89813.07273.79682.89813.79683.0727
C31.86352.79852.79852.89813.79683.07271.10321.10211.10212.89813.07273.7968
C41.86352.79852.79852.89813.07273.79682.89813.79683.07271.10321.10211.1021
H52.50801.10322.89812.89811.78191.78192.56643.27413.90912.56643.90913.2741
H62.47251.10213.79683.07271.78191.77743.90914.12634.71713.27414.12632.9397
H72.47251.10213.07273.79681.78191.77743.27412.93974.12633.90914.71714.1263
H82.50802.89811.10322.89812.56643.90913.27411.78191.78192.56643.27413.9091
H92.47253.07271.10213.79683.27414.12632.93971.78191.77743.90914.12634.7171
H102.47253.79681.10213.07273.90914.71714.12631.78191.77743.27412.93974.1263
H112.50802.89812.89811.10322.56643.27413.90912.56643.90913.27411.78191.7819
H122.47253.79683.07271.10213.90914.12634.71713.27414.12632.93971.78191.7774
H132.47253.07273.79681.10213.27412.93974.12633.90914.71714.12631.78191.7774

picture of trimethylphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 C2 H5 112.908 P1 C2 H6 110.316
P1 C2 H7 110.316 P1 C3 H8 112.908
P1 C3 H9 110.316 P1 C3 H10 110.316
P1 C4 H11 112.908 P1 C4 H12 110.316
P1 C4 H13 110.316 C2 P1 C3 97.331
C2 P1 C4 97.331 C3 P1 C4 97.331
H5 C2 H6 107.806 H5 C2 H7 107.806
H6 C2 H7 107.494 H8 C3 H9 107.806
H8 C3 H10 107.806 H9 C3 H10 107.494
H11 C4 H12 107.806 H11 C4 H13 107.806
H12 C4 H13 107.494
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability